#33399B#33399B

#33399B is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.4% C 0.157 H 274.2°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#33399B
RGB	rgb(51, 57, 155)
HSL	hsl(237, 50%, 40%)
HSV	hsv(237, 67%, 61%)
CMYK	cmyk(67.1%, 63.2%, 0%, 39.2%)
CIE-LAB	lab(29.40, 30.01, -54.28)
CIE-LCH	lch(29.40, 62.02, 298.94°)
OKLab	oklab(40.35% 0.0116 -0.1565)
OKLCH	oklch(40.35% 0.157 274.2)
XYZ	xyz(8.7428, 5.9958, 31.7006)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#33399B #9B9533

analogous

#336D9B #33399B #61339B

triadic

#33399B #9B3339 #399B33

tetradic

#33399B #9B336D #9B9533 #339B61

square

#33399B #9B336D #9B9533 #339B61

split-complementary

#33399B #9B6133 #6D9B33

monochromatic

#15173F #24286D #33399B #484FC3 #767CD2

Accessibility & contrast

On white

9.55

#33399B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#33399B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #33399B

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##33399B	#FFFFFF	#000000	##FFFFFF
##33399B	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #33399b;
/* rgb */ color: rgb(51, 57, 155);
/* oklch */ color: oklch(40.4% 0.157 274.2);

Tailwind

colors: {
  custom: {
    50: '#786fb9',
    500: '#33399b',
    950: '#000000',
  },
}

SCSS

$custom: #33399b;
$custom-light: #786fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#33399b",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 155
  },
  "hsl": {
    "h": 236.538,
    "s": 50.485,
    "l": 40.392
  },
  "oklch": {
    "l": 0.4035,
    "c": 0.1569,
    "h": 274.2
  },
  "luminance": 0.05997
}

Semantic roles & 50–950 ramp

primary

#33399B

secondary

#BAB66F

accent

#D24EDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #33399B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →